Narrative:

During a visual approach to washington national airport, we experienced a total failure of the right hydraulic system upon landing gear extension for landing. Gear had to be manually extended utilizing the emergency gear extension handle and procedures at approximately 2000 AGL, while on final approach. After appropriate checklists were completed, we advised dca tower that our gear doors may not be closed and could very possibly be hanging open (down) due to a hydraulic problem, and that we may have to stop on the runway. Tower advised us at approximately 500 ft that the doors were indeed open. At this point, all indications (except the doors) were normal, so we continued on to a normal landing and proceeded to exit runway 36 onto runway 33 and then onto taxiway 'north' with the doors dragging on their built-in skidpads. We then advised tower that we would prefer to have our company tow us to the gate and proceeded to stop and shutdown the aircraft and wait for our company tug and towbar. Tower said that they noticed some smoke from the gear area and called the emergency equipment as a precaution. Runway was shutdown for approximately 10 mins for a foreign object damage check. Aircraft was then towed uneventfully to the gate. Supplemental information from acn 273290: the nose gear would not extend. Had to pull the emergency handle and the gear came down and locked (3 green ). We pulled off runway and stopped. Maintenance closed gear doors and towed us to gate. We didn't declare emergency but should have.

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Original NASA ASRS Text

Title: MD 81 EXPERIENCES R SIDE HYD FAILURE ON APCH. USE EMER GEAR EXTENSION.

Narrative: DURING A VISUAL APCH TO WASHINGTON NATIONAL ARPT, WE EXPERIENCED A TOTAL FAILURE OF THE R HYD SYS UPON LNDG GEAR EXTENSION FOR LNDG. GEAR HAD TO BE MANUALLY EXTENDED UTILIZING THE EMER GEAR EXTENSION HANDLE AND PROCS AT APPROX 2000 AGL, WHILE ON FINAL APCH. AFTER APPROPRIATE CHKLISTS WERE COMPLETED, WE ADVISED DCA TWR THAT OUR GEAR DOORS MAY NOT BE CLOSED AND COULD VERY POSSIBLY BE HANGING OPEN (DOWN) DUE TO A HYD PROB, AND THAT WE MAY HAVE TO STOP ON THE RWY. TWR ADVISED US AT APPROX 500 FT THAT THE DOORS WERE INDEED OPEN. AT THIS POINT, ALL INDICATIONS (EXCEPT THE DOORS) WERE NORMAL, SO WE CONTINUED ON TO A NORMAL LNDG AND PROCEEDED TO EXIT RWY 36 ONTO RWY 33 AND THEN ONTO TXWY 'N' WITH THE DOORS DRAGGING ON THEIR BUILT-IN SKIDPADS. WE THEN ADVISED TWR THAT WE WOULD PREFER TO HAVE OUR COMPANY TOW US TO THE GATE AND PROCEEDED TO STOP AND SHUTDOWN THE ACFT AND WAIT FOR OUR COMPANY TUG AND TOWBAR. TWR SAID THAT THEY NOTICED SOME SMOKE FROM THE GEAR AREA AND CALLED THE EMER EQUIP AS A PRECAUTION. RWY WAS SHUTDOWN FOR APPROX 10 MINS FOR A FOREIGN OBJECT DAMAGE CHK. ACFT WAS THEN TOWED UNEVENTFULLY TO THE GATE. SUPPLEMENTAL INFO FROM ACN 273290: THE NOSE GEAR WOULD NOT EXTEND. HAD TO PULL THE EMER HANDLE AND THE GEAR CAME DOWN AND LOCKED (3 GREEN ). WE PULLED OFF RWY AND STOPPED. MAINT CLOSED GEAR DOORS AND TOWED US TO GATE. WE DIDN'T DECLARE EMER BUT SHOULD HAVE.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.